whatever is fair. For instance, assuming a rancher has bumble bees a positive externality of possessing these honey bees is that they will likewise fertilize the encompassing plants. This rancher has a nearby neighbor who likewise prots by this externality despite the fact that he has no honeyr bees himself. According to the point of view of the neighbor he has no motivation to buy honey bees himself as he is now proting from them at zero expense' Be that as it may, for the rancher, he is passing up the full advantages of his own honey bees which he paid for, on the grounds that they are likewise being utilized by his neighbour.[18i